I have a 1974 FJ40, 305V8, HEI, yellow top optima, 10si alternator. when i try and start the truck the voltage on the ignition wire drops from 14 to 10v and thats not enough to start the HEI. if i jump the HEI direct from the battery it fires right up. whats the deal with this and how can i fix it? Thanks.
HEI electrical help, please. (2 Viewers)
- Thread starter TIRED
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Sounds like you are still running the HEI through the ballast resistor. Bypass the resistor by tying the wires together.
PMK
PMK
- Thread starter
- #3
i have the power lead coming off of te ignition wire black and yellow i think, i checked the voltage at the ignition switch and it drops to like 10v. Where is the bllast resistor? Whats it look like?
